<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Reference</title>
<style>
.clamp {
  font: 16px / 32px serif;
  padding: 4px;
  background-color: yellow;
  border: 2px solid black;
}
.inner {
  background-color: purple;
  margin: 4px;
  border: 1px solid black;
}
.inner .inner {
  background-color: orange;
  white-space: pre;
}
</style>
<div class="clamp"><div class="inner"><div class="inner">Line 1
Line 2
Line 3
Line 4…</div></div></div>
<p>Following content.</p>
